Hello,
I stumbled across your site while looking at video game archivist projects, and remembered a game that I had inherited that I haven't seen any reference of online except here: http://simon.mooli.org.uk/AF/article/commercial.html (scroll down to Fatman & Slim).
I took a look through your 'missing' lists as well as your preserved lists, and didn't see any reference to this game, either.
I've attached a few quick images I've taken of the case and the disc. It appears to be an expo test-machine demo disc, and is just a burned CD written on with marker. However, I have reason to believe this may be one of only a few copies of this game to have survived, despite its shabby format.
The case has a listed serial number of SLES 51425, Kaboom Studios and ATD were the developers, Media3D bought the publishing rights but the game never made it to market.